I really appreciate all your comments and help.
I have been playing 7d2d since....I dont remember when I started, but it was some years ago, long time. It had never happened to me something like this.
I have uninstalled the launcher. I have uninstalled the game. I have erased any folder and file I have been able to find in my computer related with 7d2d.
I have reinstalled the game and verified file integrity. But again, when generating a new world the same error.
I guess I havent erased all files as I thought